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This article presents a novel approach for detecting the folding angle (Of) of foldahle OLED TDDI panels using mutual capacitance driving. It offers the potential to reduce the number of module components, conserve space, and provide additional folding angle (Of) reference data for a wide range of applications. This method can be applied in self‐capacitive and mutual‐capacitive touch sensors, eliminating the need for additional sensors or design modifications. [ABSTRACT FROM AUTHOR]

In this paper, we utilized machine learning techniques to perform finger separation recognition. The research results show that using the machine learning method proposed in this article, in combination with Novatek TDDI NT36523 tablet TDDI IC, it can largely improve the resolution of finger enumeration, especially when two fingers are very close together. [ABSTRACT FROM AUTHOR]

The knob features a great physical control with the automotive display. However, the existing knob have limitations, including insufficient support for finger detection and a lack of signal CKA' and CKB'. A novel capacitive knob design has been proposed and proved effective through the simulation, offering comprehensive performance with multiple functions and a stronger signal level CKA" and CKB" using automotive in‐cell touch LCD. [ABSTRACT FROM AUTHOR]

Moire is quite a well‐known phenomenon that can be found in display panels when multiple layouts are overlapped with different pitches. To verify Moire, we applied a step‐wise simulation based on ray‐tracing methodology. First, the CSF contour map was calculated as a function of key design parameters such as the angle and pitch of the metal wire. Then, the sensitivity of Moire image was verified under process variation and viewing angle dependency. A slight change of process variation and viewing angle results in an abrupt change of Moire. CSF value can be increased up to 15 times even a small angle variation such as 0.1 degree [ABSTRACT FROM AUTHOR]

We describe an OLED on‐cell structure touch panel, which is indispensable for flexible and foldable devices. Our unique sensor pattern design has realized high signal without affecting the reflection appearance. The signal is three times higher than that of conventional patterns, making it easy to tune and realize flexible and foldable devices with high operability. [ABSTRACT FROM AUTHOR]

In this paper, LCD in‐cell self‐capacitive sensor using 3D detection driving method for proximity 50mm is proposed. Based on self‐capacitive sensor and 3D detection driving method, proximity signal is 0.249pF in our simulation system. This paper also shows that the 50mm height slug can be detected with Novatek LCD TDDI NT36523 and PCB sensor board. [ABSTRACT FROM AUTHOR]

In this paper, a wearable OLED in‐cell self‐capacitive sensor using machine learning algorithm for water‐proofing is proposed. This paper also shows the experiment and the test result. The result shows that the success rate of water‐proofing on bezel can be largely improved (from 30.7% to 77.1%) by machine learning method on the wearable device with Novatek TDDI NT38350. [ABSTRACT FROM AUTHOR]

Designs of self‐capacitance "on‐cell" touch panel were implemented in a 6.2inch foldable OLED panel with single‐layered sensor pattern. The test results showed that the self‐capacitance "on‐cell" touch panel has high sensitivity even with TFTs connected in serial of the sensor channels. Weaker retransmission effect was also found compared with its mutual‐capacitance counterpart. The self‐capacitance touch panel has shown great potential of application in future OLED display products. [ABSTRACT FROM AUTHOR]

Designs of self‐capacitance "on‐cell" touch panel were implemented in a 6.2inch foldable OLED panel with singlelayered sensor pattern. The test results showed that the self‐capacitance "on‐cell" touch panel has high sensitivity even with TFTs connected in serial of the sensor channels. Weaker retransmission effect was also found compared with its mutual‐capacitance counterpart. The self‐capacitance touch panel has shown great potential of application in future OLED display products. [ABSTRACT FROM AUTHOR]

Touch and Display Driver Integration(TDDI) chips are widely used on smart phones and tablet PCs. Noise reduction is needed in digital raw data processing after analog‐to‐digital converters(ADC) in TDDI chips. High order digital filters are effective for digital signal noise reduction. Low time delay is required in touch panel operations. This paper proposes a method to apply an adaptive digital filter in touch panel chips with low time delay simultaneously. In this research, Signal to Noise Ratio(SNR) has been increased by an average of 7.77dB in continuous finger touch at 120Hz scan frequency, with less than 1 frame delay at touch or leave operation. [ABSTRACT FROM AUTHOR]

Dual SiOxNy shadow elimination is a common film design used in integrated color display devices. This article studied the influence factor of SiOxNy adhesion on glass. Therefore, the issue adhesion SiOxNy on glass is particularly important. The factors of affecting adhesion mainly include the several points: glass and layer surface properties, glass surface treatment, and adding transition layer. In view of the above points, we made a of lot methods such as glass shelf life control, glass pickling treatment and SiO2 transition layer respectively. Through optimizing process improvement, the final issues ratio was down from 50% to 0.84%, and by adding the SiO2 transition we solve the issue permanently. [ABSTRACT FROM AUTHOR]

Based on MM touch technology,one touch panel solution was developed which can realize both narrow border and lower cost. Firstly, three layers share one mask by cover the whole touch panel except some special hole. Secondly, both metal trace is distributed in two layers. Trace connect to pattern by C‐pad which is made by two layers of metal. Finally, by way of adding a shift, the hole of OC mask can avoid metal area, realizing that metal area still have protection, meanwhile save one mask cost. The notebook imported of this technology pass win10 certification, touch smoothly. [ABSTRACT FROM AUTHOR]

A novel, thin, flexible matrix sensor has been developed which can be integrated under a flexible OLED display to provide a touch/stylus digitizer functionality. To optimize sensor design, an FEA‐based model was coupled with Peratech's proprietary electromechanical modelling software to understand how force is transferred from the touch location to the sensing elements. The resultant sensor design comprised of a high‐resolution array of sensing elements at 0.98mm pitch, which allowed both finger and stylus input to be captured with high‐fidelity from 10–600g input force. Further tuning of force dynamic range was achieved through adjusting both the sensel design (number and order of material layers) and sensing materials. Electronics hardware and software algorithms were developed which processed the sensor signal and converted to a user‐experience which can meet industry requirements for touch panel performance. In addition, the sensor showed excellent reliability after testing to 100k bend cycles at 4mm bend radius. [ABSTRACT FROM AUTHOR]

This paper first theoretically simulates the change trend of Metal reflectance with various thicknesses of IZO and MoNbOxNy, and then experimentally produces an ultra‐low‐reflective Metal film layer: 60nm IZO + 45nm MoNbOxNy, with a reflectance of 4.97%. Furthermore, the reflectance uniformity is very excellent, the maximum & minimum values within the range of the average value ± 0.50%. Subsequently, this paper performed performance tests on IZO/MoNbOxNy Metal samples. The results are as follows: ① The reflectance in the whole band of 380nm ~ 780nm is stable, all within the range of 5% ~ 7%; ② Each film layer is well crystallized, and there is no abnormality in the microscopic morphology; ③ The adhesion is good; ④ The invisible performance Level is improved from Level 5 to Level 3. The indicators meet the requirements of the TP industry and can be used to make ultra‐low reflection and good invisible touch panels. [ABSTRACT FROM AUTHOR]

In this paper, we introduced the challenges of touch‐sensor design for foldable modules with reduced thickness. Advantages of metal‐mesh touch sensor with Manhattan pattern is demonstrated for foldable application by comparing with traditional ITO touch sensor. Test results of a foldable OLED module with touch sensor of optimized pattern are presented. Comparable performance as rigid modules have been achieved. [ABSTRACT FROM AUTHOR]

In this paper, we introduced the challenges of touch‐sensor design for foldable modules with reduced thickness. Advantages of metal‐mesh touch sensor with Manhattan pattern is demonstrated for foldable application by comparing with traditional ITO touch sensor. Test results of a foldable OLED module with touch sensor of optimized pattern are presented. Comparable performance as rigid modules have been achieved. [ABSTRACT FROM AUTHOR]

In this work, we overcome two TP sensing issue, including low ground mass and moisture touch error by changing sensor geometry and area while we were trying to reduce foldable on‐cell touch (FOCT) thickness and the design was successfully been demonstrated with high touch performance. [ABSTRACT FROM AUTHOR]

In this paper, metal trace corrosion in the process of touch panel reliability evaluation was analyzed. The impact of different layer structure, membrane thickness and trace material on corrosion resistance of products was studied. First, scanning electron microscope (SEM) was used to analysis microstructure of corrosion trace cross section, and uv‐vis spectrophotometer, ion chromatograph was used to analysis corrosion product chemical composition, the cause of trace corrosion was analyzed. Then, the impact of environmental humidity, trace material, OC2 film thickness, secondary black matrix coverage, SiOxNy layer on corrosion resistance of trace was studied. Experimental results indicate that humidity is the necessary condition to corrosion, corrosion does not occur when humidity is zero. The corrosion resistant ability of Aluminum alloy than pure aluminum. Increase the film thickness, enhancement secondary black matrix coverage, add SiOxNy layer can greatly increase the corrosion resistant ability of the product. [ABSTRACT FROM AUTHOR]

This essay mainly studied the capacitance of OGS touch panels of two different sensor patterns. First, the effects of channel width on capacitance are researched. And then the contributions of dummy layers to the capacitance are further explored. In the experiment, the pattern pitch is 4*4mm, and take the areas of channel as variables. In order to obtain the self‐capacitance and mutual‐capacitance of pattern channel, the simulations are performed by Q3D Extractor software. [ABSTRACT FROM AUTHOR]

On‐cell touch (OCT) is one of the critical techniques for thickness reduction and thus flexibility improvement of flexible active‐matrix organic light‐emitting diode (AMOLED) displays. In this work, an equivalent circuit model is established in order to speed up the iteration of OCT designs as well as to understand the impacts of design and process variations. This work provides implications for the implementation of OCT and highlights the necessity of such a hybrid methodology in OCT design. [ABSTRACT FROM AUTHOR]

This thesis takes the metal mesh touch panels as the research objects, firstly discusses the factors that affect the optical invisibility of metal electrode. In order to obtain the best production conditions for the optical invisibility, various parameters of design and process are researched through the software simulation and experiment. Finally, the effects of new technology on the metal mesh invisibility are also studied. [ABSTRACT FROM AUTHOR]

In this paper, the metal adhesion of metal trace structure and line‐width size on the organic film (insulating OC material) for touch panel was studied. At present, pure aluminum and pure copper processes can achieve the low cost and high performance requirements of the touch panel design. The influencing factors of pure aluminum trace's adhesion on organic film were studied: ➀there was no significant difference in the comparative pull‐out force between OC and inorganic film on the 3M tape used for cross‐cut test; ➁the stress directivity of the organic film and the inorganic film was tested on silicon wafer, and the adhesion mechanism was analyzed;➂ the effect of different line widths and structure on adhesion was test; ➃in order to achieve the adhesion of metal trace in the touch panel (≧4B), it is necessary to optimize the structure designed of the organic insulating layer and SiNxOy layer. [ABSTRACT FROM AUTHOR]

This paper shows the deep analysis and research for the moire in the OGS metal mesh touch panel with practical test and simulation. Firstly, we have found the key factors of moire with practical verification which is related to the CF pattern, sensor metal width, mesh angle & mesh distance. The results show that the higher LCD PPI is, the more serious and complex moire phenomenon becomes. In touch sensor, with the metal width higher, the moire also will be more obvious. Secondly, we use the theory of Huygens Fresnel to build the model for the moire simulation with the Matlab. And the results show that the larger cycle value of moire, the more obvious of the moire. The cycle value of moire is the same, which means the intensity is bigger and the phenomenon of moire will be more obvious. These simulation results have mainly matched the practical product verification and will be suitable for different size products. [ABSTRACT FROM AUTHOR]

The paper is mainly studied that side etch has the relation with ITO stacked OC layer on touch panel; And OC is served as insulating layer used between the electrode of Tx and Rx, the compactness of ITO film has the important influence on temperature and high humidity reliability evaluation. The result is product reliability. The issue of side etch would be electrical disconnection, as to the product work not properly in high suggested that main factors of side etch were the choice of OC materials, and ITO sputtering technique, in addition to the thickness, but can't be improved thoroughly only from optimizing OC materials. Therefore, ITO process, sputtering temperature and depositing power, improved completely the issue of side etch on OC. [ABSTRACT FROM AUTHOR]

We developed the world's first middle size full in‐cell LCD for PC with IGZO technology. We evaluated a new Gate driver In Panel (GIP) structure with latch circuit and confirmed that there were no problems with display and touch panel (TP) performance. Furthermore, we did a feasibility study of higher display resolutions and larger size panels, which showed future possibilities. [ABSTRACT FROM AUTHOR]

We propose a force sensor embedded advanced in-cell touch panel which can detect both touch and force input at the same time. Force sensor embedded 5.3' QHD panel has been developed, which works under activation force of 50gf and covers up to 1kgf. [ABSTRACT FROM AUTHOR]

In this work, force touch sensing is achieved in conventional capacitive touch panels, by employing piezoelectric materials. To achieve high sensitivity and stability in force detection, deep analysis of employing piezoelectric material in interactive displays is provided, together with possible solutions for piezoelectric principle related force sensing issues. [ABSTRACT FROM AUTHOR]

The capacitive touch display module has a failure phenomenon after the Air ESD 10KV evaluation, and the ESD capability value of the touch panel sensor is 20KV. Based on this issue, this article studies the structure of the touch display module and analyzes the main factors affecting the ESD failure of touch display module products. At first, compared with other ESD OK products in terms of design and process parameters, it is found that the LCM does not fully cover the touch panel traces. In the next, we compare the difference between the touch display module and the touch panel, and the touch display module has conductive materials such as backlight iron parts. Then, we give the ESD mechanism analysis according to product differences, and four groups of experiments are designed to verify the ESD capability value. The results show that during the ESD test of the product, the touch panel traces that have not been effectively protected is discharged with the nearby LCM conductive materials, resulting in the breakdown of the traces. By an insulation film attached to the touch panel's sensor traces, We can increase the antistatic ability value of touch display module to 20KV. [ABSTRACT FROM AUTHOR]

We present a mutual capacitance touch panel with a novel electrode pattern and recognition algorithms for the simultaneous detection of conductive and non-conductive objects. A prototype of the novel touch panel was fabricated using standard techniques and integrated with a standard touch panel controller to demonstrate its improved usability. [ABSTRACT FROM AUTHOR]

eTP(embedded touch panel) which provide the highly integration with notebook system design. It re-design the touch panel dimension for industry standardization, the all new design make touch panel glass utilize rate become more effective in the glass cutting process. The eTP architecture integrate the touch panel control board on the LCD PCBA; it can be solve the system control board placement issue and simplification the assembly process. eTP development the touch panel with system cover coplanar design, it provide the slim touch notebook and fluent user touch gesture. [ABSTRACT FROM AUTHOR]

Projected capacitive (p-cap) touch technology now dominates the consumer-electronics touch market, but many different touch technologies still compete in the commercial touch applications. Why is this so? Will it continue? While p-cap market share will continue to grow, this objective analysis supports the view that diverse requirements in commercial-touch applications will maintain touch 'biodiversity'. [ABSTRACT FROM AUTHOR]

In order to bring Ebook reader to the next stage, we have developed a prototype and concept design that combine flexible color electrophoretic display (EPD), flexible projected capacitive touch panel (TP) and amorphous-silicon gate driver circuit on array (GOA) technologies. This prototype has been fabricated successfully with the white reflectivity of 23.5%, contrast ratio of 16:1 and 16 gray-level color images. In terms of the flexible TP, it is capable of detecting multi-touch events and transmittance is more than 73.2%. GOA circuit operation is also verified with a 9-inch flexible color EPD. [ABSTRACT FROM AUTHOR]

Sharp succeeded the production of high performance LCD using IGZO for the first time in the world. With the extraordinary TFT characteristics, IGZO-TFT LCD can realize (1)lower power consumption and (2)higher touch panel performance than a-Si TFT LCD. In this paper, we report the development of IGZO-TFT and new LCD devices. [ABSTRACT FROM AUTHOR]

Touch functionality has been integrated in LCDs of progressively larger sizes. When bonded directly to an LCD surface, thin (< 2.0 mm) ion-exchanged (IOX'd) glass such as Corning® Gorilla® Glass, offers an ideal solution that both protects a panel and enables better ambient viewing quality. However, because the glass is directly bonded to the LCD, we must pay closer attention to touch mura. In this work, we will classify mura modes associated with touch action and discuss their suppression with Corning Gorilla Glass and the Optical C lear Adhesive (OCA) materials utilized for bonding. [ABSTRACT FROM AUTHOR]

This study reveals a solution for 3D image control with normal, shear, and pulling forces detection by mutual capacitive tactile sensor. High transmittance, good flexibility, and simple algorithm show superiorities than previous studies. The sensitivity is 0.33, 0.23, and 0.37 pF/N, and the sensing range is up to 1.4 N, 2.0 N, and 1 N respectively for normal, shear and pulling forces. The proposed sensor can be applied on the touch penal for 3D image movement. [ABSTRACT FROM AUTHOR]